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Finding the Fourth Proportional to 697,469.04, 961,936.29 and 491,420.43

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Solution

The fourth proportional to 697,469.04, 961,936.29 and 491,420.43 is: 677,757.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,469.04 : 961,936.29 = 491,420.43 : x
  2. Step 2: Convert to fraction form
    697,469.04/961,936.29 = 491,420.43/x
  3. Step 3: Cross multiply
    697,469.04x = 961,936.29 × 491,420.43
  4. Step 4: Simplify right side
    697,469.04x = 472,715,145,264.41
  5. Step 5: Solve for x
    x = 472,715,145,264.41/697,469.04
  6. Step 6: Final answer
    x = 677,757.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.